Fire glazing or finishing of glass articles.



v M. CUMMINS. FIRE GLAZING 0Rv FINISHING OFGLASS ARTICLES.

APPLIUATION FILED JAN. 9, 1909.

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` M. CUMMINS. PIRE GLEZING 0R PINISHING of GLASS ARTICLES.

APPLICATION FILED JAN. 9, 1909.

91 6,959. Patented Mar. 30, 1909.

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M. GUMMINS. FIRE GLAZING OR FINISHING OF GLASS ARTICLES. APPLIUATION FILED JAN. s, 1909.

91 6,959. Patented Mar. 30, 1909.

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MARK GUMMINS, OF MANGHESTERVENGLAND.

FIRE GLAZING OR FINISHING OF GLASS .A]EtCL"lII(.LES.r

Application led January 9, 1909.

To all whom it may concern:

Be it known that I, Mann C'UMMINS, a citizen of the United States, and a resident of Manchester', in the county of Lancaster, England, engineer, have invented certain new and useful Improvements in or Relating to Fire Glazing or Finishing of Glass Articles, ot which the following is a speci- Fication.

This invention relates to lire glazing or finishing of glass articles by exposing the article to, passing through, or over an electrical arc, which I arrange in different ways best suited for this purpose.

Hitherto the tire glazing or linishing olf glass articles has been done by exposing the article to, through, or over a flame of combustible gas. The use of this method has proved to be more or less undesirable and expensive, from the factthat the intensity ot heat varies from causes not easily controlled. According to my invention I provide means whereby glass articles may be exposed to,"passed through or over an electrical arc, and by so doing accomplish the same results in a simpler and cheaper manner.

In the accompanying drawing illustrating my said invention and to which I hereinafter refer, Figure 1 is a side view, Fig. la is a plan of a part of same and Fig. 2 an end view of a device for obtaining' an electric arc and the manner of its application, Figs. 2% and 4 are modiications of the same.

In these views the same letters reiter to like parts.

a a are the carbons that are carried in holders Z) Z) and sliding` through insulator between guides c c that are iitted in a frame Z variation by consumption in the length of the carbons is neutralized b y a balance Weight e that is connected to the carbon holders by chains f' passed over pulleys f/ centrally supported on the pipe which is placed on the standard jj.' the pulley if, is also litted on pipe j over which a chain f is also fitted and attached at c to the weight c. A single magnet coil Z is xed on the base (l, having a loose core m. in the center, which.

is free to move in and out of the coil Z; one end of a transverse lever' n is connected to said core m and rotates on the pin Q in the lever Q on the standard 1", so that when the lever a is drawn down by the core m it causes the jaw (/2 on the end of the lever n to grip the chain f between its jaw and a like Specification of Letters Patent.

Patented March 30, 1909.

Serial N0. 471,500`

jaw on the lever g, and by so doing the chain is drawn in the same direction as the core m and the lever n, thereby raising the weight c, which allows' the carbons to slip down vthe guides c by their own weight, thus separating the ends and causing an arc; p is a pin wlxich is tixed in the support p for straightening the levers :a and Q when the currentis cti, and the core m is raised by the spring at the end oi' the lever r/ and in this way allowing the chain j to pass between the aw a on lever fn and a like aw Q2 on lever g, thereby allowing the weight e to draw the carbons together to close Vthe circuit, this operation taking place every time the current is switched oil? or when the arc may go out tor other reasons.

The frame Z is secured to a wood foundation d to the underside of which a circular positive plate t and a circular negative plate u are fixed; the wood foundation rests on a spindle carrying a bevel wheel o gearing in a bevel wheel fw on a shaft to which power is applied, and the machine thereby revolved; ai a' are the wire terminals for the mains, and y y/ the brushes for admitting current to the rings t and u.

In the application of my invention the articles such as a bottle shown in dotted lines on the drawing is placed by any pret'erred means over the lamp; the current is then switched on and passes to the coil Z, which causes the core lm to be drawn down, thereby raising the end a of the lever n and the projection q2 on the lever g and causing said end n and projection g2 to grip the chain f, thereby raising the balance weight e, allowing the carbons to slip down the guides c c by the weight of the carbons and sockets into which they are fixed, and causing the ends of the carbons to separate. The carbons as shown on drawing are in an inoperative position.

In cases where the articles such as bottles, truit jars, tumblers and the like are blown by machinery, it may be desirable to have either the arc revolve around 'the edge 0r mouth oi' same glazing the surface on its passage, as shown in F 3 or the glassware may be revolved so that the edge or mouth would pass through the arc and become iinished, as shown in F Llor the arc can be lett stationary in cases of smaller mouthed articles where the arc would cover the entire surface, such as bottles; said articles may be dropped into carriers direct from the CII being various methods of conveying and handling the articles to be glazed, but I may attach the lamp in any desired position to, or in close proximity to the. blowing machine, as may be preferred or considered necessary.

I do not conlinc myselt` to the precise construction oft lamp shown on the drawings, as this may be .modiedg for articles of irregular shape I may cause the lamp to accommodatie itself to the shape of the article by being eccentrically mounted as shown in Fig. 3.

l am aware that it has already been proposed to smooth the rough exteriors of tubes of silica by means of the electric arc, and l make no claim to such yarrangemcnts in general.

By the use of an electric arc as a means .of lire finishing or glazing glass and similar articles, l am enabled to eifect the desired fusion of the skin or surface of the article undergoing treatment Without unduly heating the body of the same, and I thereby avoid all danger yots-damage or breakage.

' This condition. is due to the extremely high heat ofrsuch arc andto the fact that owing to the speed of operation its Contact with Y the article is but momentary; the fusion being substantially instantaneous. Moreover, my improved method of treatment is inuch less costly and, for the reasons above set forth, is much more satisfactory than those hitherto employed. Y

that claim as new and desire to secure by Letters Patent isz- .i

l. The method oflire glazing or finishing glass articles which consists in exposing the article under treatment to an electric arc.

T he method of iire glazing or finishing glass articles which consists in passing the article for treatment through an electric arc.

ln testimony whereof l have signed my naine to this specification, Vin the presence of two subscribing witnesses.

MARK CUMMNS. Witnesses THOMAS Pnnsoorr, HROLD WALKER. 

